QuestionFind the resultant velocity when crossing a river with a current of $15 \mathrm{~m/s}$ downstream and crossing at $2 \mathrm{~m/s}$ north.

Studdy Solution
Calculate the magnitude of the resultant velocity.
$$|\vec{v}_{resultant}| = \sqrt{225 +4} \, m/s = \sqrt{229} \, m/s \approx15.13 \, m/s$$The resultant velocity is approximately $15.13 \, m/s$ in the direction of the vector $\vec{v}_{resultant} =15 \hat{i} +2 \hat{j}$.